David Nicandri The director of the Washington State Historical Society shows and talks about drawings by Gustav Sohon, who chronicled the Isaac Stevens Treaty Tour in the 1850s. Stevens, then the governor of the newly minted Washington Territory, led the tour as part of a 10-treaty negotiation between the U.S. and Indian leaders. State Capital Museum, 211 21st Ave. S.W. (Olympia), 360-753-2580. $75 (includes hors d'oeuvres and dinner). 5:30 p.m. Wed., March 30.

Puget Sound Georgia Basin Research Conference Literally hundreds of scientists and scholars converge on the Washington Convention and Trade Center for this environmental confab. The Wednesday evening forum, led by a panel of researchers and policymakers, is open to the public. 800 Convention Pl., 206-694-5000. Free. 7-9 p.m. Wed., March 30.

Panel Discussion Curators, authors, and artists talk about the Center on Contemporary Art's current show, "Plays Well With Others," which features collaborations between writers and visual artists. 410 Dexter Ave. N., 206-728-1980. Free. 7:30 p.m. Wed., March 30.

Film Screening The documentary Not Straight Forward, about lesbian dating in Seattle, premiered at last year's Seattle Lesbian and Gay Film Festival and screens tonight as a fund-raiser for the LGBT Center and Verbena. Showbox, 1426 First Ave., 206-628-3151. $12 ($10 advance). 7 p.m. Thurs., March 31.

Nature Slide show In a forum sponsored by People for Puget Sound, conservationist David Lutz shows off the wonders of B.C.'s Great Bear Rainforest. REI, 222 Yale Ave. N., 206-382-7007. $10 ($8 advance). 7-9 p.m. Thurs., March 31.

Learning Disability Screenings For people of all ages who show signs of a learning disability. Hope Clinic, 14030 N.E. 24th St. (Bellevue), 425-462-7800. Free. Time by appointment. Fri., April 1.

Keyan Tomaselli A faculty member at the University of KwaZula-Natal, he'll explain how arts programs and social services can work together, with emphasis on South Africa's DramAidE, which combines theater education and health research. North Creek Cafe, UW/Bothell campus, 18115 Campus Way N.E. (Bothell), 425-352-3576. Free. 3 p.m. Fri., April 1.

Signe Olynyk The head of Canada's Twilight Pictures speaks about her experience in the TV- and film-production industry. Sponsored by the Northwest Screenwriters Guild. Victory Studios, 2247 15th Ave. W., 206-282-1776. $10 (suggested donation; free for NWSG members and local film students). 7:30 p.m. Fri., April 1.

Garden Sustainability Symposium Bastyr University hosts this daylong parade of workshops on such timely topics as drought-tolerant plants, climate change, and making the most of minimal moisture. Sponsored by the Northwest Perennial Alliance. 14500 Juanita Dr. N.E., 206-390-2073. $60. 9 a.m.-3 p.m. Sat., April 2.

Queer Youth Forum Mayor Greg Nickels, SPD Chief Gil Kerlikowski, and ex–Real World housemate Danny Roberts (who is openly gay and now lives in Seattle) are among the guests of honor at this daylong forum for young people who identify as lesbian, gay, bisexual, and transgender. Meany Middle School, 301 21st Ave. S., 206-684-4514. Free. 9 a.m.-4 p.m. Sat., April 2.

Southfest A town-meets-gown day at South Seattle Community College, this event includes a sale at the SSCC Garden Center, a four-pack of mini-classes (wine tasting and sushi making among them), an RV show, the chance to apply for a U.S. passport, and several other attractions. 6000 16th Ave. S.W., 206-768-6873. Free. 9 a.m.-3:30 p.m. (visit www.southseattle.edu/southfest.htm for complete schedule). Sat., April 2.

Work Party Help plant trees, flowers, and shrubs at a new "pocket park" in Greenwood. Bring a shovel and work gloves! Sixth Avenue Northwest and Northwest 76th Street, 206-781-7840. Free. Drop-in hours: 9 a.m.-3 p.m. Sat., April 2.

Gardening Workshop Not living in a house doesn't mean you can't surround yourself with houseplants, as you'll learn at this In Bloom class, "Gardening for the Apartment Dweller." 4437 California Ave. S.W., 206-932-2588. Free. 10:30-11:30 a.m. Sat., April 2. 5:30-6:30 p.m. Mon., April 4.

Family Fun Workshop First examine the Museum of Flight's new exhibit on the history of kites, then make one of your own. 9404 E. Marginal Way S., 206-764-5700. $14 ($13 seniors, $7.50 youth). 11:15 a.m. and 1:15 p.m. Sat., April 2-Sun., April 3.

KZAM 30th Anniversary Reunion Three decades after the maverick progressive Seattle radio station first went on the air, members of the original staff are hosting a nostalgic get-together. The event includes performances by artists featured on KZAM and pizza from Tutta Bella; all proceeds benefit Reclaim the Media, a nonprofit media watchdog. Columbia City Theatre, 4916 Rainier Ave. S. Visit www.kzam.net for information and to purchase tickets. $50. 7 p.m.-midnight. Sat., April 2.

Volkswalk Follow a historic route through Kirkland as you march with members of the American Volksport Association, the event's sponsor. Both 5K and 10K routes are available. Marina Park, 25 Lakeshore Plaza (Kirkland), 425-827-7018. Free. Start between 8 a.m. and noon, finish by 3 p.m. Sun., April 3.

Urban Sustainability Forum The Central Library begins a 10-week series with a talk on "Local Politics of Sustainability" by University of Vermont professor Robert Costanza, an expert in ecological economics. 1000 Fourth Ave., 206-386-4636. Free. 5:30-7 p.m. Mon., April 4.

James Gaines The author of Palace of Reason: Bach Meets Frederick the Great in the Age of Enlightenment discusses the composer and the monarch, emphasizing their impact on European history. Town Hall, 206-624-6600. $5. 7:30 p.m. Mon., April 4.

Joe Follansbee The local writer talks about the schooner Wawona, which fished Alaskan waters from 1913 to 1943 and is berthed at South Lake Union Park. Sponsored in part by 4Culture. Admiral Congregational Church, 4320 S.W. Hill St., 206-932-2928. Free. 7 p.m. Tues., April 5.

Craig Van Hoy Speaking as part of an American Lung Association–sponsored series of talks, the climber recounts his accomplishments, which include scaling some of the world's loftiest peaks. REI, 222 Yale Ave. N., 800-732-9339. Free. 6:30 p.m. Wed., April 6.

Hot Spots in Our World The University of Washington–sponsored lecture series begins with "Iraq: What's Next?" presented by Middle East Studies Program head Ellis Goldberg. UW campus (call 206-897-8939 for exact location and to register). $15. 7-8:30 p.m. Wed., April 6.

Iraq Forum Chat with fellow doves, and perhaps the occasional hawk, at this forum on the Iraqi resistance to U.S. occupation. Sponsored by the International Socialist Organization. Seattle Central Community College, 1701 Broadway Ave. E. (Room 3203), 206-931-2922. Free. 7-9 p.m. Wed., April 6.

Meet the Mammals The biweekly lecture series at the Burke Museum kicks off with "Remarkable Mammals: Diversity for All Environments," an overview of mammals' evolution since Triassic times. 17th Avenue Northeast and Northeast 45th Street, 206-543-9681. Free (preregistration required). 7-8:30 p.m. Wed., April 6.

Environmental Forum Poet and essayist Terry Tempest Williams leads a pack of earth-friendly thinkers in a panel discussion at Town Hall titled: "Where in the World Are We Going? How Nature, Cities, and Cultures Can Flourish in the 21st Century." Sponsored by People for Puget Sound and the Society for Ecological Restoration. 1119 Eighth Ave., 206-382-7007. $15. 7:30-9:30 p.m. Wed., April 6.